html, body 
{
	width: 100%;
	height: 100%;
}

#block 
{
	position: relative;
	width: 1000px;
	margin: 0 auto;
	min-height: 100%;
}

#head
{
	background:red;
	width:100%;
	height:100px;
	margin-bottom: 5%;
}

#content
{
	background: yellow;
	height: 500px;
	width: 68%;
	margin-left: 16%;
	margin-bottom: 5%;
}

#sidebarright
{
	background: blue;
	width: 15%;
	height: 1000px;
	margin-bottom: 5%;
	float: right;
}

#sidebarleft
{
	background: blue;
	width: 15%;
	height: 1000px;
	margin-bottom: 5%;
	float: left;
}

#clear 
{
	clear: both;
}

#footer
{
	position: relative;
	background: red;
	width: 1000px;
	height: 30px;
	font-size: .9em;
	margin: -30px auto 0;
}
